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Citation: LU Xin-Mei, WU Quan-Fu, MI Hong-Yu, ZHANG Xiao-Gang. Electrochemical Capacitance of Camphorsulfonic Acid Doped Polyaniline Microtubes Prepared at Low Temperature[J]. Acta Physico-Chimica Sinica, ;2007, 23(06): 820-824. doi: 10.3866/PKU.WHXB20070605 shu

Electrochemical Capacitance of Camphorsulfonic Acid Doped Polyaniline Microtubes Prepared at Low Temperature

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Institute of Applied Chemistry, Xinjiang University, Urumqi 830046, P. R. China; College of Material Science and Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, P. R. China

Received Date: 6 December 2006
Available Online: 26 April 2007

Polyaniline(PANI) microtubes were prepared at low temperature with camphorsulfonic acid (CSA) as dopant. The structure and morphology of the microtubes were examined by Fourier-transforminfrared (FTIR) spectroscopy, scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The length of the microtubes was 2-3 μm and the outer diameter was 300-400 nm. The results indicated that the higher concentration of dopant was liable to the PANI-CSA microtube formation. Electrochemical capacitance properties of the doped polyaniline electrode were investigated by means of cyclic voltammetry, electrochemical impedance spectroscopy, and galvanostatic charge/discharge measurements. When the molar ratio of aniline/CSA was 1:1, polyaniline had a od stability and cyclic performance, and the specific capacitance reached up to 522 F·g-1.
- Polyaniline; Camphorsulfonic acid; Low temperature synthesis; Electrochemical capacitor
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